Reducing Ammonia Emissions from Dairy Cattle Production via Cost-Effective Manure Management Techniques in China
| Autor: | Jiafa Luo, Zhaohai Bai, Nannan Zhang, Juan Liu, Wilfried Winiwarter, Lin Ma, Yongqing Guo, Stewart Ledgard |
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| Rok vydání: | 2019 |
| Předmět: |
China
Manure management 010501 environmental sciences engineering.material 01 natural sciences Ammonia chemistry.chemical_compound Animals Environmental Chemistry Production (economics) Fertilizers Dairy cattle 0105 earth and related environmental sciences Waste management Cost–benefit analysis General Chemistry Manure Diet chemistry Slurry engineering Environmental science Cattle Fertilizer |
| Zdroj: | Environmental Science & Technology. 53:11840-11848 |
| ISSN: | 1520-5851 0013-936X |
| Popis: | This study analyzed ammonia reduction potential and related costs and benefits of several ammonia emission reduction technologies applicable for dairy production from cattle in China. Specifically, these included diet manipulation, manure acidification, manure/slurry covers, and solid manure compaction. Ammonia emissions for China were estimated using the GAINS and NUFER models, while mitigation potentials of technologies were determined from laboratory studies. Ammonia reduction potentials from dairy production in China ranged from 0.8 to 222 Gg NH3 year–1 for the selected technologies. Implementation costs ranged from a savings of US$15 kg–1 NH3 abated to an expenditure of US$45 kg–1 NH3 abated, while the total implementation costs varied from a savings of US$1.5 billion in 2015 to an expenditure of a similar size. The best NH3 reduction technology was manure acidification, while the most cost-effective option was diet optimization with lower crude protein input. For most abatement options, material costs were the critical element of overall costs. The fertilizer value of manure could partly offset the implementation cost of the options tested. Furthermore, benefits due to avoided health damage, as a result of reducing NH3 emissions, could make all abatement options (except for manure compaction) profitable on the scale of a national economy. |
| Databáze: | OpenAIRE |
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